Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In the transition from November to December, Petit Cayenne reports an average high-temperature of a warm 28.8°C (83.8°F), indicating a close resemblance to the prior month. The month of December shows a minor drop from daytime temperatures, generally recording a low average of 24.5°C (76.1°F).Heat index
December's mean heat index is evaluated at a sweltering 35°C (95°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.Observations indicate that the heat index values are for shady locations with light wind. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
The average relative humidity in December is 83%.Rainfall
In Petit Cayenne, in December, during 25.2 rainfall days, 204mm (8.03") of precipitation is typically accumulated. In Petit Cayenne, French Guiana, during the entire year, the rain falls for 277 days and collects up to 1707mm (67.2") of precipitation.Daylight
The month with the shortest days is December, with an average of 11h and 48min of daylight.On the first day of December in Petit Cayenne, sunrise is at 06:23 and sunset at 18:14. On the last day of the month, sunrise is at 06:37 and sunset at 18:28 -03.
Sunshine
In Petit Cayenne, the average sunshine in December is 7.3h.UV index
The months with the lowest UV index are January through May and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 6 transforms into these recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
How hot is it in Petit Cayenne in December?
What is the average humidity in December in Petit Cayenne?
How much does it rain in Petit Cayenne in December?
What is the month with the shortest days in Petit Cayenne?
How many hours of daylight does Petit Cayenne have in December?
What time are sunrise and sunset in December in Petit Cayenne?
How long on average sun shines in December in Petit Cayenne?
What are the months with the lowest UV index in Petit Cayenne?
What is the UV index reading in December in Petit Cayenne?
Average temperature in December
Petit Cayenne, French Guiana
- Average high temperature in December: 28.8°C
The warmest month (with the highest average high temperature) is October (31.6°C).
The month with the lowest average high temperature is February (27.7°C).
- Average low temperature in December: 24.5°C
The months with the highest average low temperature are October and November (24.8°C).
The coldest months (with the lowest average low temperature) are June and July (23.8°C).
Average pressure in December
Petit Cayenne, French Guiana
- Average pressure in December: 1010.8mbar
The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in December
Petit Cayenne, French Guiana
- Average wind speed in December: 11.7km/h
The windiest month (with the highest average wind speed) is February (12.9km/h).
The calmest month (with the lowest average wind speed) is July (8.3km/h).
Average humidity in December
Petit Cayenne, French Guiana
- Average humidity in December: 83%
The month with the highest relative humidity is May (86%).
The months with the lowest relative humidity are September and October (76%).
Average rainfall in December
Petit Cayenne, French Guiana
- Average rainfall in December: 204mm
The wettest month (with the highest rainfall) is May (293mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days in December
Petit Cayenne, French Guiana
- Average rainfall days in December: 25.2 days
The month with the highest number of rainy days is May (28.9 days).
The month with the least rainy days is October (11.6 days).
Average daylight in December /
Average sunshine in December
Petit Cayenne, French Guiana
- Average daylight in December: 11h and 5min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in December: 7h and 2min
The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in December
Petit Cayenne, French Guiana
- Average sunshine days in December: 4.1 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is June (0.9 days).
Average UV index in December
Petit Cayenne, French Guiana
- Average UV index in December: 6
The months with the highest UV index are June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May and December (UV index 6).
Average cloud cover in December
Petit Cayenne, French Guiana
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility in December
Petit Cayenne, French Guiana
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, August, September, October and November (10km).
The months with the lowest visibility are April, May, June, July and December (9km).
Petit Cayenne, French Guiana
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